CAS号查询库

CAS号是公开的化学物质信息的最权威的集合。CAS号涵盖从1957年至今的科学文献中确定的物质，其他物质可追溯到20世纪初。它也称CAS编号(CAS Registry Number，或称CAS Number，CAS Rn，CAS #)，又称CAS登录号或CAS登记号码，是某种物质(化合物、高分子材料、生物序列(Biological sequences)、混合物或合金)的唯一的数字识别号码。美国化学会的下设组织化学文摘社(Chemical Abstracts Service，简称CAS)负责为每一种出现在文献中的物质分配一个CAS编号，其目的是为了避免化学物质有多种名称的麻烦，使数据库的检索更为方便。如今几乎所有的化学数据库都允许用CAS编号检索。

名称	英文名	物理化学性质	CAS号	分子式
(Z)-3-(2-Methylpropylidene)piperidin-2-one	(Z)-3-(2-Methylpropylidene)piperidin-2-one	分子量：153.22 密度：N/A 沸点：N/A 熔点：N/A	1863026-12-3	C₉H₁₅NO
5-(2-Chloro-5-fluoropyrimidin-4-yl)-3-isopropyl-2-methylindazole	5-(2-Chloro-5-fluoropyrimidin-4-yl)-3-isopropyl-2-methylindazole	分子量：304.75 密度：N/A 沸点：N/A 熔点：N/A	1868086-69-4	C₁₅H₁₄ClFN₄
Tert-butyl 4-(benzo[d][1,3]dioxol-5-ylmethyl)piperidine-1-carboxylate	Tert-butyl 4-(benzo[d][1,3]dioxol-5-ylmethyl)piperidine-1-carboxylate	分子量：319.4 密度：N/A 沸点：N/A 熔点：N/A	1415469-73-6	C₁₈H₂₅NO₄
4-[[5-(3-Chlorophenyl)-6-methoxy-3-pyridinyl]methyl]benzenamine	4-[[5-(3-Chlorophenyl)-6-methoxy-3-pyridinyl]methyl]benzenamine	分子量：324.8 密度：N/A 沸点：N/A 熔点：N/A	1628116-98-2	C₁₉H₁₇ClN₂O
3-Allyloxy-2-chloro-6-iodopyridine	3-Allyloxy-2-chloro-6-iodopyridine	分子量：295.50 密度：N/A 沸点：N/A 熔点：N/A	1864055-27-5	C₈H₇ClINO
Tert-butyl 4-[[2,2-dimethylpropanoyl(methyl)amino]methyl]piperidine-1-carboxylate	Tert-butyl 4-[[2,2-dimethylpropanoyl(methyl)amino]methyl]piperidine-1-carboxylate	分子量：312.4 密度：N/A 沸点：N/A 熔点：N/A	1327049-56-8	C₁₇H₃₂N₂O₃
2,4-Dichloro-5-methylbenzyl bromide	2,4-Dichloro-5-methylbenzyl bromide	分子量：253.95 密度：N/A 沸点：N/A 熔点：N/A	1803838-12-1	C₈H₇BrCl₂
Methyl 2,4-dichloro-5-methylphenylacetate	Methyl 2,4-dichloro-5-methylphenylacetate	分子量：233.09 密度：N/A 沸点：N/A 熔点：N/A	1804516-66-2	C₁₀H₁₀Cl₂O₂
(5-Fluoropyridin-3-yl)(3-hydroxypiperidin-1-yl)methanone	(5-Fluoropyridin-3-yl)(3-hydroxypiperidin-1-yl)methanone	分子量：224.23 密度：N/A 沸点：N/A 熔点：N/A	1564876-48-7	C₁₁H₁₃FN₂O₂
(5-Fluoropyridin-3-yl)(4-hydroxypiperidin-1-yl)methanone	(5-Fluoropyridin-3-yl)(4-hydroxypiperidin-1-yl)methanone	分子量：224.23 密度：N/A 沸点：N/A 熔点：N/A	1565523-10-5	C₁₁H₁₃FN₂O₂
1-(3,3-Dimethyl-2-oxoindolin-5-yl)-3-(tetrahydro-2H-pyran-4-yl)urea	1-(3,3-Dimethyl-2-oxoindolin-5-yl)-3-(tetrahydro-2H-pyran-4-yl)urea	分子量：303.36 密度：N/A 沸点：N/A 熔点：N/A	1327067-55-9	C₁₆H₂₁N₃O₃
3-Bromo-4-chloro-N-(2-(methylsulfonyl)ethyl)benzamide	3-Bromo-4-chloro-N-(2-(methylsulfonyl)ethyl)benzamide	分子量：340.62 密度：N/A 沸点：N/A 熔点：N/A	1327067-20-8	C₁₀H₁₁BrClNO₃S
5-fluoro-N-(2-hydroxy-2,3-dihydro-1H-inden-1-yl)pyridine-3-carboxamide	5-fluoro-N-(2-hydroxy-2,3-dihydro-1H-inden-1-yl)pyridine-3-carboxamide	分子量：272.27 密度：N/A 沸点：N/A 熔点：N/A	1774937-66-4	C₁₅H₁₃FN₂O₂
5,6,7,8-Tetrahydro-[1,2,4]triazolo[4,3-A]pyridin-5-amine	5,6,7,8-Tetrahydro-[1,2,4]triazolo[4,3-A]pyridin-5-amine	分子量：138.17 密度：N/A 沸点：N/A 熔点：N/A	1554779-81-5	C₆H₁₀N₄
Tert-butyl(6-bromo-2-methoxypyridin-3-yl)(methyl)carbamate	Tert-butyl(6-bromo-2-methoxypyridin-3-yl)(methyl)carbamate	分子量：317.18 密度：N/A 沸点：N/A 熔点：N/A	1534390-61-8	C₁₂H₁₇BrN₂O₃
Tert-butyl 4-(4-methylbenzyl)piperidine-1-carboxylate	Tert-butyl 4-(4-methylbenzyl)piperidine-1-carboxylate	分子量：289.4 密度：N/A 沸点：N/A 熔点：N/A	1629602-39-6	C₁₈H₂₇NO₂
Tert-butyl 4-[[2-(4-fluorophenyl)-2-oxoethyl]carbamoyl]piperidine-1-carboxylate	Tert-butyl 4-[[2-(4-fluorophenyl)-2-oxoethyl]carbamoyl]piperidine-1-carboxylate	分子量：364.4 密度：N/A 沸点：N/A 熔点：N/A	1328613-01-9	C₁₉H₂₅FN₂O₄
7-Fluoro-3,3-dimethyl-2,3-dihydro-1h-inden-1-one	7-Fluoro-3,3-dimethyl-2,3-dihydro-1h-inden-1-one	分子量：178.20 密度：N/A 沸点：N/A 熔点：N/A	1379666-49-5	C₁₁H₁₁FO
2'-Isopropyl-[1,1'-biphenyl]-2-amine	2'-Isopropyl-[1,1'-biphenyl]-2-amine	分子量：211.30 密度：N/A 沸点：N/A 熔点：N/A	1402547-19-6	C₁₅H₁₇N
4-{2-[4-(Pyridin-2-yl)piperazin-1-yl]pyrimidin-4-yl}morpholine	4-{2-[4-(Pyridin-2-yl)piperazin-1-yl]pyrimidin-4-yl}morpholine	分子量：326.4 密度：N/A 沸点：N/A 熔点：N/A	1905961-53-6	C₁₇H₂₂N₆O
3-Phenyldibenzo[b,d]furan-4-amine	3-Phenyldibenzo[b,d]furan-4-amine	分子量：259.3 密度：N/A 沸点：N/A 熔点：N/A	2375718-34-4	C₁₈H₁₃NO
N-(Thiophen-2-ylmethyl)-8-oxa-2-azaspiro[4.5]decane-4-carboxamide	N-(Thiophen-2-ylmethyl)-8-oxa-2-azaspiro[4.5]decane-4-carboxamide	分子量：280.39 密度：N/A 沸点：N/A 熔点：N/A	1422057-56-4	C₁₄H₂₀N₂O₂S
2-[(2,3-Dihydro-1-benzofuran-5-yl)methyl]-3-methylbutanoic acid	2-[(2,3-Dihydro-1-benzofuran-5-yl)methyl]-3-methylbutanoic acid	分子量：234.29 密度：N/A 沸点：N/A 熔点：N/A	1890508-80-1	C₁₄H₁₈O₃
2-(4-Boc-1-piperazinyl)-5-propylpyrimidine	2-(4-Boc-1-piperazinyl)-5-propylpyrimidine	分子量：306.40 密度：N/A 沸点：N/A 熔点：N/A	1623003-07-5	C₁₆H₂₆N₄O₂
8-(3-Chloro-5-isoquinolin-6-ylpyridin-4-yl)-2,8-diazaspiro[4.5]decan-1-one	8-(3-Chloro-5-isoquinolin-6-ylpyridin-4-yl)-2,8-diazaspiro[4.5]decan-1-one	分子量：392.9 密度：N/A 沸点：N/A 熔点：N/A	1661839-46-8	C₂₂H₂₁ClN₄O
8-[3-chloro-5-(1H-indazol-5-yl)pyridin-4-yl]-2,8-diazaspiro[4.5]decan-1-one	8-[3-chloro-5-(1H-indazol-5-yl)pyridin-4-yl]-2,8-diazaspiro[4.5]decan-1-one	分子量：381.9 密度：N/A 沸点：N/A 熔点：N/A	1661839-47-9	C₂₀H₂₀ClN₅O
8-[3-Chloro-5-[4-(1-methylpyrazol-4-yl)phenyl]pyridin-4-yl]-2,8-diazaspiro[4.5]decane-1,3-dione	8-[3-Chloro-5-[4-(1-methylpyrazol-4-yl)phenyl]pyridin-4-yl]-2,8-diazaspiro[4.5]decane-1,3-dione	分子量：435.9 密度：N/A 沸点：N/A 熔点：N/A	1661839-52-6	C₂₃H₂₂ClN₅O₂
2-Propenamide, N-(7-hydroxy-6-methoxy-2-oxo-2H-1-benzopyran-3-yl)-3-(3,4,5-trimethoxyphenyl)-, (2E)-	2-Propenamide, N-(7-hydroxy-6-methoxy-2-oxo-2H-1-benzopyran-3-yl)-3-(3,4,5-trimethoxyphenyl)-, (2E)-	分子量：427.4 密度：N/A 沸点：N/A 熔点：N/A	1681019-85-1	C₂₂H₂₁NO₈
3-Bromo-5-(chloromethyl)-2-ethoxypyridine	3-Bromo-5-(chloromethyl)-2-ethoxypyridine	分子量：250.52 密度：N/A 沸点：N/A 熔点：N/A	1631981-25-3	C₈H₉BrClNO
tert-Butyl 2-amino-3-carbamoyl-4,5,7,8-tetrahydro-6H-thieno[2,3-d]azepine-6-carboxylate	tert-Butyl 2-amino-3-carbamoyl-4,5,7,8-tetrahydro-6H-thieno[2,3-d]azepine-6-carboxylate	分子量：311.40 密度：N/A 沸点：N/A 熔点：N/A	1589573-39-6	C₁₄H₂₁N₃O₃S
2-{[(tert-butoxy)carbonyl]amino}-6-ethyl-4H,5H,6H,7H-thieno[2,3-c]pyridine-3-carboxylic acid	2-{[(tert-butoxy)carbonyl]amino}-6-ethyl-4H,5H,6H,7H-thieno[2,3-c]pyridine-3-carboxylic acid	分子量：326.4 密度：N/A 沸点：N/A 熔点：N/A	1589573-01-2	C₁₅H₂₂N₂O₄S
4-Iodo-2-methyl-2H-1,2,3-triazole	4-Iodo-2-methyl-2H-1,2,3-triazole	分子量：208.99 密度：N/A 沸点：N/A 熔点：N/A	2137840-57-2	C₃H₄IN₃
2,3-Dihydro-I(2),2-dioxo-1H-benzimidazole-5-propanal	2,3-Dihydro-I(2),2-dioxo-1H-benzimidazole-5-propanal	分子量：204.18 密度：N/A 沸点：N/A 熔点：N/A	1019027-79-2	C₁₀H₈N₂O₃
2-Chloro-6-(difluoromethyl)isonicotinic acid	2-Chloro-6-(difluoromethyl)isonicotinic acid	分子量：207.56 密度：N/A 沸点：N/A 熔点：N/A	1806767-21-4	C₇H₄ClF₂NO₂
9,9'-(Dibenzo[b,d]furan-2,8-diyl)bis(9H-carbazole-2-carbonitrile)	9,9'-(Dibenzo[b,d]furan-2,8-diyl)bis(9H-carbazole-2-carbonitrile)	分子量：548.6 密度：N/A 沸点：N/A 熔点：N/A	1924620-22-3	C₃₈H₂₀N₄O
2-Amino-1-(2-methylphenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxamide	2-Amino-1-(2-methylphenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxamide	分子量：317.3 密度：N/A 沸点：N/A 熔点：N/A	1620968-98-0	C₁₈H₁₅N₅O
4-Cyano-5-(difluoromethyl)-3-iodo-2-methylpyridine	4-Cyano-5-(difluoromethyl)-3-iodo-2-methylpyridine	分子量：294.04 密度：N/A 沸点：N/A 熔点：N/A	1806951-19-8	C₈H₅F₂IN₂
(S)-Methyl 5,5-dimethylpyrrolidine-2-carboxylate hydrochloride	(S)-Methyl 5,5-dimethylpyrrolidine-2-carboxylate hydrochloride	分子量：193.67 密度：N/A 沸点：N/A 熔点：N/A	565232-62-4	C₈H₁₆ClNO₂
1-Propanone, 1-[4-(1-aminoethyl)-1-piperidinyl]-3-[5-(4-chlorophenyl)-2-oxazolyl]-	1-Propanone, 1-[4-(1-aminoethyl)-1-piperidinyl]-3-[5-(4-chlorophenyl)-2-oxazolyl]-	分子量：361.9 密度：N/A 沸点：N/A 熔点：N/A	1835590-05-0	C₁₉H₂₄ClN₃O₂
1-(3-Amino-4-fluorophenyl)-3-chloropropan-2-one	1-(3-Amino-4-fluorophenyl)-3-chloropropan-2-one	分子量：201.62 密度：N/A 沸点：N/A 熔点：N/A	1806298-02-1	C₉H₉ClFNO
4-[2-(2,6-difluorophenyl)ethynyl]-N,N-dimethylaniline	4-[2-(2,6-difluorophenyl)ethynyl]-N,N-dimethylaniline	分子量：257.28 密度：N/A 沸点：N/A 熔点：N/A	1620383-82-5	C₁₆H₁₃F₂N
1-(4-Bromo-2-(methylthio)phenyl)hydrazine	1-(4-Bromo-2-(methylthio)phenyl)hydrazine	分子量：233.13 密度：N/A 沸点：N/A 熔点：N/A	1806541-52-5	C₇H₉BrN₂S
2-(2-Amino-6-(difluoromethyl)-3-nitropyridin-4-yl)acetonitrile	2-(2-Amino-6-(difluoromethyl)-3-nitropyridin-4-yl)acetonitrile	分子量：228.16 密度：N/A 沸点：N/A 熔点：N/A	1805990-72-0	C₈H₆F₂N₄O₂
3-[(2,3-Dichlorophenoxy)methyl]azetidine	3-[(2,3-Dichlorophenoxy)methyl]azetidine	分子量：232.10 密度：N/A 沸点：N/A 熔点：N/A	1863671-44-6	C₁₀H₁₁Cl₂NO
tert-Butyl 7-methyl-3,6-diazabicyclo[3.2.0]heptane-3-carboxylate	tert-Butyl 7-methyl-3,6-diazabicyclo[3.2.0]heptane-3-carboxylate	分子量：212.29 密度：N/A 沸点：N/A 熔点：N/A	1438241-15-6	C₁₁H₂₀N₂O₂
6-Amino-5-(difluoromethyl)-4-nitropicolinonitrile	6-Amino-5-(difluoromethyl)-4-nitropicolinonitrile	分子量：214.13 密度：N/A 沸点：N/A 熔点：N/A	1805262-78-5	C₇H₄F₂N₄O₂
6-(4-Methylphenoxy)-4-pyrimidinecarboxylic acid	6-(4-Methylphenoxy)-4-pyrimidinecarboxylic acid	分子量：230.22 密度：N/A 沸点：N/A 熔点：N/A	1894008-20-8	C₁₂H₁₀N₂O₃
2,3-Dichloro-1-(difluoromethyl)-4-methylbenzene	2,3-Dichloro-1-(difluoromethyl)-4-methylbenzene	分子量：211.03 密度：N/A 沸点：N/A 熔点：N/A	1806303-98-9	C₈H₆Cl₂F₂
4-[[(2-Ethylbutyl)amino]sulfonyl]benzoic acid	4-[[(2-Ethylbutyl)amino]sulfonyl]benzoic acid	分子量：285.36 密度：N/A 沸点：N/A 熔点：N/A	54190-78-2	C₁₃H₁₉NO₄S
6-Bromo-5-chloro-3-iodo-1H-indole	6-Bromo-5-chloro-3-iodo-1H-indole	分子量：356.38 密度：N/A 沸点：N/A 熔点：N/A	1934858-88-4	C₈H₄BrClIN